I don't know exactly what you want, but if you are talking about making a service like LinkExchange or VirtualExchange, then I have the program for you. It is called Banner Plus. It is free, and makes it so you can run your own banner exchange. People can signup, put the banner code on their site, and you can define how many impressions they get per banner shown on their site. You get a defualt banner and everything. It is a great program. If you want to see an example, fo to my web site, http://www.infared.com/banner. The place to get this script is here: http://www.gadnet.com/bplus . I hope I helped some.